/// <summary>
        /// Deletes an existing Customer
        /// </summary> 
        /// <param name="id">Customer Id</param>
        public static void Delete(int id)
        {
            if (id < 1)
                throw new ArgumentException("Customer Id must be greater than 0", "id");

            SqlDataAccessLayer dataAccessLayer = new SqlDataAccessLayer();
            dataAccessLayer.CustomerDelete(id);
        }